Adding Dot For Linspace

Question

Ertan Aras 2019-5-6

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评论： Star Strider 2019-5-6

Hello friends,I have parametric equation about 5 paper,I want to add dot for every * and / signs to use linspace.How can I do automatically

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Rik 2019-5-6

Have a read here and here. It will greatly improve your chances of getting an answer.

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Answer 1

Star Strider 2019-5-6

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编辑：Star Strider 2019-5-6

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Use the vectorize (link) function.

The only change you temporatily need to make is to create your function as a character vector by putting single quotes (') around it first, then removing them from the vectorize output.

Example —

f = exp(-0.1*t) * sin(2*pi*t);
fv = vectorize('exp(-0.1*t) * sin(2*pi*t)')

producing:

fv =
    'exp(-0.1.*t) .* sin(2.*pi.*t)'

You then have to manually edit your expression to put it back as a valid expression. That simply means removing the single quotes:

f = exp(-0.1.*t) .* sin(2.*pi.*t)

and your expression is vectorized, ready for your linspace arguments!

EDIT — Corrected typographical errors.

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Ertan Aras 2019-5-6

Thanks a lot.I ve solved this problem utilizing vectorize functions.

Star Strider 2019-5-6

As always, my pleasure!

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Answer 2

gonzalo Mier 2019-5-6

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https://ww2.mathworks.cn/matlabcentral/answers/460494-adding-dot-for-linspace#answer_373775

在 MATLAB Online 中打开

You have two possibilities here:

In the text file, you replace * by .* and / by ./ in all the document (there is an option in the replace to replace all).
If you have it like a function and want to do it by programming, you can overload the funtion mtimes and mrdivide by times and rdivide as:

function c = mtimes(a,b), c = times(a,b); end
function c = mrdivide(a,b), c = rdivide(a,b); end

You can add this to the end of your file or to your folder.

By preference, always do the first method, as overloading operators is not a good practice unless you try to ofuscate your code, but I have found some moments where it's the only way